• Login
    View Item 
    •   Home
    • Office of Sponsored Research (OSR)
    • KAUST Funded Research
    • Publications Acknowledging KAUST Support
    • View Item
    •   Home
    • Office of Sponsored Research (OSR)
    • KAUST Funded Research
    • Publications Acknowledging KAUST Support
    • View Item
    JavaScript is disabled for your browser. Some features of this site may not work without it.

    Browse

    All of KAUSTCommunitiesIssue DateSubmit DateThis CollectionIssue DateSubmit Date

    My Account

    Login

    Quick Links

    Open Access PolicyORCID LibguideTheses and Dissertations LibguideSubmit an Item

    Statistics

    Display statistics

    Enhanced Activity and Selectivity of Carbon Nanofiber Supported Pd Catalysts for Nitrite Reduction

    • CSV
    • RefMan
    • EndNote
    • BibTex
    • RefWorks
    Type
    Article
    Authors
    Shuai, Danmeng
    Choe, Jong Kwon
    Shapley, John R.
    Werth, Charles J.
    Date
    2012-02-16
    Online Publication Date
    2012-02-16
    Print Publication Date
    2012-03-06
    Permanent link to this record
    http://hdl.handle.net/10754/598177
    
    Metadata
    Show full item record
    Abstract
    Pd-based catalyst treatment represents an emerging technology that shows promise to remove nitrate and nitrite from drinking water. In this work we use vapor-grown carbon nanofiber (CNF) supports in order to explore the effects of Pd nanoparticle size and interior versus exterior loading on nitrite reduction activity and selectivity (i.e., dinitrogen over ammonia production). Results show that nitrite reduction activity increases by 3.1-fold and selectivity decreases by 8.0-fold, with decreasing Pd nanoparticle size from 1.4 to 9.6 nm. Both activity and selectivity are not significantly influenced by Pd interior versus exterior CNF loading. Consequently, turnover frequencies (TOFs) among all CNF catalysts are similar, suggesting nitrite reduction is not sensitive to Pd location on CNFs nor Pd structure. CNF-based catalysts compare favorably to conventional Pd catalysts (i.e., Pd on activated carbon or alumina) with respect to nitrite reduction activity and selectivity, and they maintain activity over multiple reduction cycles. Hence, our results suggest new insights that an optimum Pd nanoparticle size on CNFs balances faster kinetics with lower ammonia production, that catalysts can be tailored at the nanoscale to improve catalytic performance for nitrite, and that CNFs hold promise as highly effective catalyst supports in drinking water treatment. © 2012 American Chemical Society.
    Citation
    Shuai D, Choe JK, Shapley JR, Werth CJ (2012) Enhanced Activity and Selectivity of Carbon Nanofiber Supported Pd Catalysts for Nitrite Reduction. Environ Sci Technol 46: 2847–2855. Available: http://dx.doi.org/10.1021/es203200d.
    Sponsors
    This work was primarily supported by Water CAMPWS, a Science and Technology Center program of the National Science Foundation under agreement number CTS-0120978, and partially by King Abdullah University of Science and Technology. TEM and STEM analysis were carried out in part at the Frederick Seitz Materials Research Laboratory Central Facilities (MRL), University of Illinois. We thank Danielle Gray of the School of Chemical Sciences 3M Materials Science Laboratory and Mauro Sardela of MRL for performing XRD analyses. We thank Scott J. Robinson of the Imaging Technology Group at Beckman Institute, University of Illinois for performing ESEM analyses. We thank Seyed A. Dastgheib of Illinois State Geological Survey for performing CO chemisorption analyses. We thank Rudiger Laufhutte of the School of Chemical Sciences Microanalytical Laboratory for performing ICP-MS analyses. We thank Yigang Sun, Liangcheng Yang, and Jingwei Su of the Department of Agriculture and Biological Engineering for performing aggregate size analyses. We thank Jian Li of the Department of Civil and Environmental Engineering for assisting with the regression method.
    Publisher
    American Chemical Society (ACS)
    Journal
    Environmental Science & Technology
    DOI
    10.1021/es203200d
    PubMed ID
    22295991
    ae974a485f413a2113503eed53cd6c53
    10.1021/es203200d
    Scopus Count
    Collections
    Publications Acknowledging KAUST Support

    entitlement

    Related articles

    • Supporting palladium metal on gold nanoparticles improves its catalysis for nitrite reduction.
    • Authors: Qian H, Zhao Z, Velazquez JC, Pretzer LA, Heck KN, Wong MS
    • Issue date: 2014 Jan 7
    • Enhancement of Nitrite Reduction Kinetics on Electrospun Pd-Carbon Nanomaterial Catalysts for Water Purification.
    • Authors: Ye T, Durkin DP, Hu M, Wang X, Banek NA, Wagner MJ, Shuai D
    • Issue date: 2016 Jul 20
    • Tuning the acid/metal balance of carbon nanofiber-supported nickel catalysts for hydrolytic hydrogenation of cellulose.
    • Authors: Van de Vyver S, Geboers J, Schutyser W, Dusselier M, Eloy P, Dornez E, Seo JW, Courtin CM, Gaigneaux EM, Jacobs PA, Sels BF
    • Issue date: 2012 Aug
    • Solvent-free oxidation of benzyl alcohol using Au-Pd catalysts prepared by sol immobilisation.
    • Authors: Dimitratos N, Lopez-Sanchez JA, Morgan D, Carley AF, Tiruvalam R, Kiely CJ, Bethell D, Hutchings GJ
    • Issue date: 2009 Jul 7
    • Cumene hydroperoxide hydrogenation over Pd/C catalysts.
    • Authors: Zhu QC, Shen BX, Ling H, Gu R
    • Issue date: 2010 Mar 15
    DSpace software copyright © 2002-2023  DuraSpace
    Quick Guide | Contact Us | KAUST University Library
    Open Repository is a service hosted by 
    Atmire NV
     

    Export search results

    The export option will allow you to export the current search results of the entered query to a file. Different formats are available for download. To export the items, click on the button corresponding with the preferred download format.

    By default, clicking on the export buttons will result in a download of the allowed maximum amount of items. For anonymous users the allowed maximum amount is 50 search results.

    To select a subset of the search results, click "Selective Export" button and make a selection of the items you want to export. The amount of items that can be exported at once is similarly restricted as the full export.

    After making a selection, click one of the export format buttons. The amount of items that will be exported is indicated in the bubble next to export format.